Former Led Zeppelin frontman Robert Plant, Americana singer/songwriter Lucinda Williams and soul singer Leon Bridges are among the headliners for Ottawa’s CityFolk festival at Lansdowne Park this September.

The lineup, announced Tuesday, also features Canadian folkies Donovan Woods and Tim Baker and veteran rockers Our Lady Peace during the four-day festival that runs Sept. 12-15.

Larkin Poe — sisters Rebecca and Megan Lovelle of Atlanta — will add some roots rock to the mix while the B.C.-based Snotty Nose Rez Kids will bring their Juno-nominated Indigenous hip-hop flavour to the festival.

“Since moving to Lansdowne Park in 2015, CityFolk has become an important staple for music fans to celebrate the onset of fall,” CityFolk’s executive and artistic director Mark Monahan said in a release. “The festival has established an end-of-summer tradition— cottages are closed, kids are back in school — and CityFolk gives people one last chance to enjoy a great outdoor music experience.”

Williams, touring on the 20th anniversary of the release of her Grammy-winning album Car Wheels on a Gravel Road, headlines the festival’s opening night on Thursday, Sept. 12.

The Summersault show of Our Lady Peace, Live and Bush, take the stage on Sept. 13; Bridges headlines Sept. 14, while Robert Plant and the Sensational Space Shifters close out the festival on Sunday, Sept. 15.

The popular Marvest free shows by local acts will again be hosted in various venues around the festival site.

An early, pre-sale offer of discount tickets begins Thursday, May 23 at 10 a.m., with regular ticket sales beginning Friday, May 24 at 10 a.m. More details on performers and ticket sales is available at www.cityfolkfestival.com